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1. 发明授权

US5333844A Non-graphite crucible for high temperature applications 失效
标题翻译：非石墨坩埚用于高温应用
公开(公告)号：US5333844A
公开(公告)日：1994-08-02
申请号：US951742
申请日：1992-09-25
申请人： Cressie E. Holcombe , William A. Pfeiler
发明人： Cressie E. Holcombe , William A. Pfeiler
IPC分类号： F27B14/06 , F27B14/10 , C21B3/00
CPC分类号： F27B14/10 , F27B14/061 , Y10S137/91
摘要： A multi-piece crucible for high temperature applications comprises a tubular side wall member having a lip on the inside surface and a bottom member or members forming a container for containing a melt of a material during a high temperature melt-casting operations. The multi-piece design prevents cracking of the crucible or leakage of the melt from the crucible during the melt-casting operation. The lip of the tubular member supports the bottom member. The contacting surfaces where the lip of the tubular side wall member contacts the bottom member of the multi-piece crucible contains a ceramic sealing material. The ceramic sealing material forms a seal sufficient to prevent the melt of the material from leaking out of the multi-piece crucible during the melt-casting process. The multi-piece crucible is made of a material which is chemically inert to the melt and has structural integrity at the melting point temperature of the melt, or of a material coated with such a material.
摘要翻译：用于高温应用的多件式坩埚包括在内表面具有唇缘的管状侧壁构件和形成用于在高温熔融浇铸操作期间容纳材料的熔体的容器的底部构件或构件。该多件式设计可以防止在熔融铸造操作期间坩埚的裂纹或熔体从坩埚泄漏。管状构件的唇部支撑底部构件。管状侧壁构件的唇部与多片坩埚的底部构件接触的接触表面包含陶瓷密封材料。陶瓷密封材料形成足够的密封，以防止在熔体浇铸过程中材料的熔体从多片坩埚中泄漏出来。多件式坩埚由对熔体具有化学惰性的材料制成，并且在熔体的熔点温度或涂覆有这种材料的材料上具有结构完整性。

2. 发明授权

US5482257A Non-graphite crucible for high temperature applications 失效
标题翻译：非石墨坩埚用于高温应用
公开(公告)号：US5482257A
公开(公告)日：1996-01-09
申请号：US186837
申请日：1994-01-25
申请人： Cressie E. Holcombe , William A. Pfeiler
发明人： Cressie E. Holcombe , William A. Pfeiler
IPC分类号： F27B14/06 , F27B14/10 , B22D41/00
CPC分类号： F27B14/10 , F27B14/061
摘要： A multi-piece crucible for high temperature applications comprises a tubular side wall member having a lip on the inside surface and a bottom member or members forming a container for containing a melt of a material during a high temperature melt-casting operations. The multi-piece design prevents cracking of the crucible or leakage of the melt from the crucible during the melt-casting operation. The lip of the tubular member supports the bottom member. The contacting surfaces where the lip of the tubular side wall member contacts the bottom member of the multi-piece crucible contains a ceramic sealing material. The ceramic sealing material forms a seal sufficient to prevent the melt of the material from leaking out of the multi-piece crucible during the melt-casting process. The multi-piece crucible is made of a material which is chemically inert to the melt and has structural integrity at the melting point temperature of the melt, or of a material coated with such a material. The multi-piece crucible is contained in a thermal can assembly of a high temperature induction furnace during a high temperature melt-casting operation. One embodiment of the multi-piece crucible comprises a tubular member having a vertical slot filled with a ceramic sealing material to provide expansion of the tubular member without cracking during the high temperature melt-casting operation.
摘要翻译：用于高温应用的多件式坩埚包括在内表面具有唇缘的管状侧壁构件和形成用于在高温熔融浇铸操作期间容纳材料的熔体的容器的底部构件或构件。该多件式设计可以防止在熔融铸造操作期间坩埚的裂纹或熔体从坩埚泄漏。管状构件的唇部支撑底部构件。管状侧壁构件的唇部与多片坩埚的底部构件接触的接触表面包含陶瓷密封材料。陶瓷密封材料形成足够的密封，以防止在熔体浇铸过程中材料的熔体从多片坩埚中泄漏出来。多件式坩埚由对熔体具有化学惰性的材料制成，并且在熔体的熔点温度或涂覆有这种材料的材料上具有结构完整性。在高温熔融铸造操作期间，多片坩埚被包含在高温感应炉的热罐组件中。多片坩埚的一个实施例包括管状构件，其具有填充有陶瓷密封材料的垂直狭槽，以在高温熔融浇铸操作期间提供管状构件的膨胀而不会开裂。

3. 发明授权

US4550412A Carbon-free induction furnace 失效
标题翻译：无碳感应炉
公开(公告)号：US4550412A
公开(公告)日：1985-10-29
申请号：US568770
申请日：1984-01-06
申请人： Cressie E. Holcombe , David R. Masters , William A. Pfeiler
发明人： Cressie E. Holcombe , David R. Masters , William A. Pfeiler
IPC分类号： F27B14/06 , F27B14/10 , F27D1/00 , H05B6/02
CPC分类号： F27D1/0009 , F27B14/061 , F27B14/10 , F27D1/0006
摘要： An induction furnace for melting and casting highly pure metals and alloys such as uranium and uranium alloys in such a manner as to minimize contamination of the melt by carbon derived from the materials and the environment within the furnace. The subject furnace is constructed of carbon free materials and is housed within a conventional vacuum chamber. The furnace comprises a ceramic oxide crucible for holding the charge of metal or alloy. The heating of the crucible is achieved by a plasma-sprayed tungsten susceptor surrounding the crucible which, in turn, is heated by an RF induction coil separated from the susceptor by a cylinder of inorganic insulation. The furnace of the present invention is capable of being rapidly cycled from ambient temperatures to about 1650.degree. C. for effectively melting uranium and uranium alloys without the attendant carbon contamination problems previously encountered when using carbon-bearing furnace materials.
摘要翻译：一种用于熔融和铸造高纯度金属和合金如铀和铀合金的感应炉，以便使来自该材料的碳和来自炉内的环境的熔化物的污染最小化。本炉由无碳材料构成，并被容纳在常规真空室内。该炉包括用于保持金属或合金的电荷的陶瓷氧化物坩埚。坩埚的加热通过围绕坩埚的等离子体喷涂的钨基座来实现，坩埚又由被无机绝缘体的圆筒与基座隔开的RF感应线圈加热。本发明的炉能够从环境温度快速循环至约1650℃，以有效地熔化铀和铀合金，而不会在使用含碳炉材料时遇到先前遇到的碳污染问题。

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